| Code P01 | Parameter | Unit |
| ALKYZZXX | Total alkalinity per unit volume of the water body | Micromoles per litre |
| AMONZZXX | Concentration of ammonium {NH4+ CAS 14798-03-9} per unit volume of the water body [unknown phase] | Micromoles per litre |
| CPHLZZXX | Concentration of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate >unknown phase] | Milligrams per cubic metre |
| DOXYZZXX | Concentration of oxygen {O2 CAS 7782-44-7} per unit volume of the water body [dissolved plus reactive particulate phase] | Parts per thousand |
| NTRAYYDZ | Concentration of nitrate {NO3- CAS 14797-55-8} per unit volume of the water body [dissolved plus reactive particulate phase] | Micromoles per litre |
| NTRIYYDZ | Concentration of nitrite {NO2- CAS 14797-65-0} per unit volume of the water body [dissolved plus reactive particulate phase] | Micromoles per litre |
| PHOSYYDZ | Concentration of phosphate {PO43- CAS 14265-44-2} per unit volume of the water body [dissolved plus reactive particulate phase] | Micromoles per litre |
| PHPTZZZZ | Concentration of phaeophytin {pheophytin} per unit volume of the water body | Milligrams per cubic metre |
| PHXXZZXX | pH per unit volume of the water body | pH units |
| PRESPR01 | Pressure (spatial co-ordinate) exerted by the water body by profiling pressure sensor and corrected to read zero at sea level | Decibars |
| SLCAAATX | Concentration of silicate {SiO44- CAS 17181-37-2} per unit volume of the water body [dissolved plus reactive particulate phase] by colorimetric autoanalysis | Micromoles per litre |
